2025年六升七英语衔接期情态动词表推测语气差异试卷及答案

2025 年六升七英语衔接期情态动词表推测语气差异试卷及答案 一、单项选择题（每题2 分，共10 题） 1. Look at those dark clouds. It ______ rain soon. Let’s hurry home. A. must B. might C. can’t D. will 2. The door is locked, and I can’t find the key. Mom ______ have taken it with her. A. must B. might C. could D. can’t 3. Where’s Tom? His bike is still here. He ______ have gone far. A. mustn’t B. might not C. can’t D. won’t 4. The exam results are excellent! You ______ have studied very hard. A. must B. might C. could D. can 5. I’m not sure, but the new student ______ be from Canada. A. must B. might C. can’t D. will 6. That ______ be Sarah’s bag. She has a blue one, not red. A. must B. might C. could D. can’t 7. It’s impossible. He ______ have finished the project already. It’s too soon. A. must B. might C. could D. can’t 8. The lights are off in their house. They ______ be asleep. A. must B. might C. could D. can 9. ______ this be the right answer? I’m a bit confused. A. Must B. Might C. Could D. Can’t 10. She speaks French fluently. She ______ have lived in France for years. A. must B. might C. could D. can’t 二、多项选择题（每题2 分，共10 题） 1. Which modals express possibility? (Choose TWO) A. must B. might C. should D. could 2. Which modals express certainty? (Choose TWO) A. must B. can’t C. may D. could 3. Which sentences show a logical deduction? (Choose TWO) A. He must be tired after the long journey. B. You should see a doctor about that cough. C. She might come to the party later. D. They can’t be at home; their car is gone. 4. Which modals can be used for negative deduction? (Choose TWO) A. mustn’t B. might not C. can’t D. couldn’t 5. Which modals are followed by ‘have + past participle’ for past deduction? (Choose TWO) A. must B. might C. should D. could 6. Which sentences express uncertainty? (Choose TWO) A. It must be raining; I hear thunder. B. She might know the answer. C. They could be lost. D. He can’t be serious! 7. Which modals are used to ask for possibility? (Choose TWO) A. Must B. Might C. Could D. Should 8. Which sentences are correct for past deduction? (Choose TWO) A. She must forgot her keys. B. He might have missed the bus. C. They could have won the game. D. You must have been tired yesterday. 9. Which modals express a strong possibility? (Choose TWO) A. must B. might C. could D. may 10. Which sentences use modals correctly for deduction? (Choose TWO) A. You mustn’t be late for class. (rule) B. She can’t be in London; I saw her here an hour ago. (deduction) C. Might I borrow your pen? (permission) D. It must have snowed last night; look at the ground! (deduction) 三、判断题（每题2 分，共10 题） 1. “Must” always expresses obligation, never deduction. (True/False) 2. “Can’t” is used to express certainty that something is NOT true. (True/False) 3. “Might” and “could” express the same level of possibility. (True/False) 4. We use “must have + past participle” to deduce something about the past. (True/False) 5. “Should” is commonly used for logical deduction like “must”. (True/False) 6. “May” cannot be used to express possibility. (True/False) 7. “Couldn’t” can be used instead of “can’t” for negative deduction about the past. (True/False) 8. “Must” expresses a higher degree of certainty than “might”. (True/False) 9. We use “might not” to say something is definitely not true. (True/False) 10. “Can” is frequently used for deduction in affirmative sentences (e.g., “He can be at home”). (True/False) 四、简答题（每题5 分，共4 题） 1. Explain the difference in meaning between “She must be at home” and “She might be at home”. 2. How do we form a deduction about the past using “can’t”? Give an example sentence. 3. Rewrite this sentence using a different modal verb to show less certainty: “It must be raining outside.” 4. Explain why “He mustn’t be the thief” is incorrect if you mean “I’m sure he is not the thief”. What should you say instead? 答案(Answers) 一、单项选择题 1. A 2. A 3. C 4. A 5. B 6. D 7. D 8. A 9. C 10. A 二、多项选择题 1. B, D 2. A, B 3. A, D 4. C, D 5. A, D 6. B, C 7. B, C 8. B, D 9. A, D 10. B, D 三、判断题 1. False 2. True 3. True 4. True 5. False 6. False 7. True 8. True 9. False 10. False 四、简答题 1. “She must be at home” expresses a strong belief or certainty based on evidence (e.g., her car is there, lights are on). “She might be at home” expresses possibility or uncertainty; it’s a guess without strong evidence. 2. We use “can’t have + past participle”. Example: “He can’t have stolen the money; he was with me all evening.” 3. “It might/could/may be raining outside.” 4. “Mustn’t” expresses prohibition (not allowed). To express certainty that something is not true (negative deduction), use “can’t”. Correct sentence: “He can’t be the thief.”